Triaeris stenaspis Simon, 1892

Sherwood, Danniella, Brescovit, Antonio D., Henrard, Arnaud, Jocqué, Rudy & Fowler, Liza, 2023, Oonops erinaceus Benoit, 1977, a junior synonym of Triaeris stenaspis Simon, 1892 (Araneae: Oonopidae), Zootaxa 5297 (2), pp. 291-293 : 291-293

Triaeris stenaspis Simon, 1892 ( Figs 1–9 )

Triaeris stenaspis Simon, 1892: 561 .

Triaeris patellaris Bryant, 1940: 268 , fig. 4.

Triaeris berlandi Lawrence, 1952: 5 , figs. 3a–f.

Triaeris lepus Suman, 1965: 235 , figs. 27–31.

Triaeris lacandona Brignoli, 1974: 208 , figs. 4A–F.

Oonops erinaceus Benoit, 1977: 31 , figs. 11a–d. syn. nov.

For complete synonymy list, see World Spider Catalog (2023)

Type material examined. Holotype ♀ Oonops erinaceus ( BE _ RMCA _ ARA.Ara.133326 ), Flagstaff hill, Saint Helena, 2000–2200m, 7.V.1967, J. Decelle and N. Leleup coll.; paratype imm. ♀ Oonops erinaceus ( BE _ RMCA _ ARA.Ara.133347 ), Prosperous Bay Plain, Saint Helena, 15°57’S, 05°39’W, 1000–1100ft, 5–6.V.1967, J. Decelle & N. Leleup coll.

Other material examined. 1 ♀ ( IBSP 61400 ), Brazil: Reservatório Guarapiranga , Jardim Ângela, Ilha dos Eucaliptos (23°45’9.5286”S - 46°44’23.3082”W), 07-13.X.2003, I. Cizauskas & C. R. M. Garcia coll.

Diagnosis. See Platnick et al. (2012).

Description. For a detailed description, see Platnick et al. (2012).

Remarks. Simon (1892) described Triaeris stenaspis based on a female from Saint Vincent Island, and this now pantropical and introduced species has never had a male documented. Thus, it is likely this species is wholly parthenogenic ( Brescovit et al., 2019). The long seta on the chelicera and the female genitalia ( Figs 8–9 ) illustrated in the original description of Oonops erinaceus by Benoit (1977) are typical of T. stenaspis material from multiple continents examined by DS, ADB, AH and RJ (pers. obs.). Indeed, the epigyne of the holotype, with distinctive morphology of the receptacle, is almost indistinguishable from specimens from other regions (cf. Figs 6, 7 ) and differences in the habitus to fresh specimens are simply the result of long-term preservation in ethanol ( Figs 1–5 ). Although the type specimen of O. erinaceus is almost completely bleached and appears at first to lack scuta, we can still faintly observe the border of the dorsal scutum ( Figs 2, 4 ). Therefore, we propose, based on near-identical cheliceral setae and epigynal morphology, that O. erinaceus be considered a junior synonym of T. stenaspis syn. nov.

Figures

FIGURES 1–9. Triaeris stenaspis Simon, 1892, 1–4 Oonops erinaceus Benoit, 1977 holotype female (BE_RMCA_ARA. Ara.133326) [= Triaeris stenaspis] 1 habitus, dorsal view, 2 opisthosoma, dorsal view, 3 habitus, ventral view, 4 habitus, lateral view (left hand side), 5–6 T. stenaspis non-type female from Reservatório Guarapiranga, Jardim Ângela, Ilha dos Eucaliptos, Brazil (IBSP 61400), 5 habitus, dorsal view (photograph adapted from Brescovit et al., 2019), 6 epigyne, ventral view (photograph adapted from Brescovit et al., 2019), 7–9 Oonops erinaceus Benoit, 1977 holotype female (BE_RMCA_ARA.Ara.133326) [= Triaeris stenaspis], 7 epigyne, ventral view, 8 chelicera, lateral view (illustration adapted from Benoit, 1977), 9 opisthosoma, ventral view (illustration adapted from Benoit, 1977). Scale bars = 0.5 mm (1, 3–5), 0.2 mm (2), 0.1 mm (6–7).